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Senior Full Stack Engineer

Job in Columbia, Howard County, Maryland, 21046, USA
Listing for: eSimplicity
Full Time position
Listed on 2026-01-11
Job specializations:
  • Software Development
    Full Stack Developer, Software Engineer
Job Description & How to Apply Below

Description

About Us:

eSimplicity is modern digital services company that work across government, partnering with our clients to improve the lives and ensure the security of all Americans—from soldiers and veteran to kids and the elderly, and defend national interests on the battlefield. Our engineers, designers and strategist cut through complexity to create intuitive products and services that equip Federal agencies with solutions to courageously transform today for a better tomorrow for all Americans.

Purpose

and Scope:

We are seeking a Senior Full Stack Engineer to join a cross-functional, entrepreneurial, collaborative team dedicated to solving difficult problems for our client.? In this role, you will help develop a solution in full, from high-level system design and configuration to application development and data integration. You will work directly with our customers to build compelling effective solutions that meets or exceeds our customer business objectives.

Responsibilities:
  • Designs, creates, and builds application(s) and features in Java Spring Boot; creates back-end code and interfaces for new applications; analyzes user needs to implement front-end design, graphics, performance, and capacity; integrates applications with other platforms as needed.
  • Collaborates with other team members across multiple functional areas (engineering, Dev Ops, UX, Product, Scrum Master) ?
  • Experience with building and operating API’s (JSON, Web APIs, REST APIs, and XML RESTful practices, and Graph

    QL)
  • Experience with deploying Java Spring Boot services /applications on AWS Gov. Cloud (Dev Sec Ops  and Fin Ops)
  • Authors friendly documentation (e.g., API documentation, deployment operations).
  • Quickly adopts new programming tools, frameworks, and techniques.
  • Translates designs and wireframes into reusable, testable and efficient front-end code
  • Builds, iterates, and tests scalable, back-end APIs for web applications
  • Designs and develops data models to optimize data access for web applications
  • Integrates 2nd and 3rd party platforms and APIs
  • Participates in Agile processes including daily standups, demos, retrospectives, and sprint planning
  • Works closely with product owners, business analysts, designers, and engineers to gather, refine and implement business requirements
  • Provides support, maintenance, and enhancements to the existing system
  • Collaborates with a fully integrated Agile team to deliver continuous improvement to designs, processes, and standards.
  • Collaborates and builds customer relationships on a foundation of trust and effectiveness.
  • Other duties as needed
Required Qualifications:
  • Minimum of 7 years related experience.
  • Expert-level proficiency in at least one of the following languages:
    Typescript, Java script, Python
  • Deep understanding of APIs, and familiarity with JSON, Web APIs, REST APIs, JSON-RPC, XML-RPC, RESTful practices, and GraphQL
  • Solid experience with implementing, deploying, and maintaining both relational and non-relational databases like SQL, MySQL, Postgre

    SQL, Mongo

    DB or similar
  • Experience with Docker containerization and deployments
  • Extensive experience using Git and CI/CD platforms to deliver safe releases at a rapid rate.
  • Experience in AWS cloud data architecture and cloud best practices (Dev Sec Ops  (Terraform), Fin Ops)
  • Experience working on fully integrated cross-functional Agile product teams.
  • Experience with benchmarking, monitoring, and performance engineering applications
  • A demonstrated preference for the “correct” amount of unit and integration tests, across a variety of platforms.
  • Strong documentation and problem‑solving skills
  • Flexible and willing to accept a change in priorities as necessary.
  • Ability to work in a fast‑paced, team‑oriented environment
  • Experience with Atlassian Jira/Confluence.
  • Excellent command of written and spoken English.
  • Ability to obtain and maintain a Public Trust, residing in the United States
  • Communicates technical information to non‑technical audience effectively through presentations, white papers and advisory roles.
Desired

Qualifications:
  • Knowledge of AuthN and AuthZ systems, including Okta, OAuth, SAML and AWS IAM Policies/Roles using attribute‑based access controls
  • Knowledg…
Position Requirements
10+ Years work experience
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